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Amanda [17]
3 years ago
8

A student wishes to compare the cost of textbooks from two sellers. The same forty textbooks are priced at both seller A and sel

ler B. Specifically, the student is determining whether at the 0.01 significance level there is sufficient evidence that the mean textbook cost from seller A is lower than the mean cost of textbooks from seller B. A computer is used and it is found that the P-value = 0.005. Which of the following statements is true?
A. This is a test regarding two dependent samples. There is sufficient evidence to conclude that the mean price of textbooks is lower at seller A.
B. This is a test regarding two dependent samples. There is insufficient evidence to conclude that the mean price of textbooks is lower at seller A.
C. This is a test regarding two independent samples. There is sufficient evidence to conclude that the mean price of textbooks is lower at seller A.
D. This is a test regarding two independent samples. There is insufficient evidence to conclude that the mean price of textbooks is lower at seller A.
Mathematics
1 answer:
MrRissso [65]3 years ago
6 0
Would it like.. not be C?? Im guessing its C (:
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Answer:

10 sides (decagon)

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You find the perimeter by adding up all the sides of a shape.

side + side + side + side... = perimeter

You know that <em>each</em> side is 4/5 centimeters. You also know that the perimeter is 8 centimeters.

<u>You can set up an equation like this:</u>

4/5 * number of sides = 8

<em>or you can write it in a simpler form as:</em>

4/5x=8

<u>Now solve it like a normal equation:</u>

5 * (4/5x) = (8) * 5

(4x) / 4=(40) / 4

x = 10

So, you know the shape has 10 sides that are 4/5 centimeters each.

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mr_godi [17]

Answer:

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Papessa [141]

Answer:

  see attached

Step-by-step explanation:

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Comparing this to your equation, we see ...

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Answer:

3

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3x+3-x+3=12

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